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. Author manuscript; available in PMC: 2016 Sep 27.
Published in final edited form as: ACS Biomater Sci Eng. 2015 Sep 17;1(11):1174–1182. doi: 10.1021/acsbiomaterials.5b00319

Figure 3.

Figure 3

Cell adhesion density and cell adhesion strength exposed to different concentrations of Zn2+. (a) Cell adhesion test: ECs were mixed with Zn2+ solutions and allowed to attach for 2 and 6 h. (b) Cell adhesion strength test: ECs were mixed with Zn2+ solutions and allowed to attach for 6 h. After 6 h, the cell medium was replaced by DPBS. The plate were sealed and centrifuged at 500g for 5 min. Student's t test, * p < 0.05, ** p < 0.01, and *** p < 0.001.